Flashcards
Flash Cards
Cards in this deck (22)
- 1LANLocal Area Network
A network in one building - 2WANWide Area Network
massive internet - 3MANMetro area network
a network within one city - 4PANPersonal Area Network
connect between bluetooth - 5VPNVirtual Private Network
two physical networks connected by another connection generally the intentet. - 6Physical Topologythe physical layout of devices on a network and how the cables and wires connect these devices.
- 7Logical Topologyhow data is transmitted and revived between devices on a network regardless of their physical connections.
- 8Topologythe way in which the devices (nodes) are connected.
- 9NodeA device that is connected to the network.
- 10Example of nodescomputers, printers, hubs, switches and routers.
- 11Physical bus topologyall nodes are connected to a single backbone. the backbone is a single wire that carries data packets to the nodes. terminators must be installed at the two ends of the backbones.
- 12Advantages of bus topologiesless cable required than in other topologies.
- 13Disadvantages of bus topologiesUnable to accommodate a large number of nodes - such as those required for LAN's
a single break in the backbone disables the entire network. - 14Physical ring topologyeach node connects to exactly two other nodes, forming a complete ring, which generally circulates data packets in one direction. Each node revives data from one node and transmits to the other.
- 15Advantages of ring topologiesthere are dirty jokes that can be made about it...if your feeling particularly inventive.
- 16Disadvantages of ring topologiesif one cable is broken the entire network is disabled
to remove or add a note the entire network must be stopped
all nodes must be powered at all times if the network is to operate. - 17Mesh topologyThese include more than one physical path between pairs of nodes. Routers are required for mesh topologies.
- 18Advantage of mesh topologiesfault tolerance, as packages are automatically routed around faults.
can be used in high - speed long distance connections. - 19Disadvantages of mesh topologiesrouters are required to direct each datapack.
- 20Physical star topologyall nodes connect to a central node via their own dedicated cable. the central node is the device that connects all outlaying nodes such that they can transmit and receive packets to and from each other node.
- 21Advantages of star topologieseach node had its own cable and can be connected and disconnected without affecting any other nodes
new nodes can easily be added without first disabling the network
the process of identifying faults is made more simple. - 22Disadvantages of star topologiesa lot cabling is required
if a fault occurs in the central node then all connected nodes are also disabled.
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- Flashcards on Flash Cards, created by 11.smith on 18/09/2015.
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